Annotations: 4P22

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Ubiquitin activating enzymes SAE1-like	8045065	4000139	SCOP2 (2022-06-29)
A	SCOP2 Family	FCCH domain of UBA1	8045057	4000349	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Activating enzymes of the ubiquitin-like proteins	8054236	3000112	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	FCCH domain-like	8054235	3000138	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	CC (catalytic cysteine) domain-like	8054237	3000140	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	FCCH domain-like	8054235	3000138	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Activating enzymes of the ubiquitin-like proteins	8054236	3000112	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Activating enzymes of the ubiquitin-like proteins	8054236	3000112	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	CC (catalytic cysteine) domain-like	8054237	3000140	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF16190	e4p22A2	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: PF16190	ECOD (1.6)
A	PF00899	e4p22A1	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: Activating enzymes of the ubiquitin-like proteins	F: PF00899	ECOD (1.6)
A	PF16191	e4p22A3	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: Activating enzymes of the ubiquitin-like proteins	F: PF16191	ECOD (1.6)
B	PF16190	e4p22B2	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: PF16190	ECOD (1.6)
B	PF00899	e4p22B1	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: Activating enzymes of the ubiquitin-like proteins	F: PF00899	ECOD (1.6)
B	PF16191	e4p22B3	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: Activating enzymes of the ubiquitin-like proteins	F: PF16191	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)
A	2.40.30.180	Mainly Beta	Beta Barrel	Elongation Factor Tu (Ef-tu)	domain 3	CATH (4.3.0)
B	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)
B	2.40.30.180	Mainly Beta	Beta Barrel	Elongation Factor Tu (Ef-tu)	domain 3	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00899	ThiF family (ThiF)	ThiF family	This domain is found in ubiquitin activating E1 family and members of the bacterial ThiF/MoeB/HesA family. It is repeated in Ubiquitin-activating enzyme E1 [1-3].	Domain
A, B	PF16190	Ubiquitin-activating enzyme E1 FCCH domain (E1_FCCH)	Ubiquitin-activating enzyme E1 FCCH domain	This domain is found in the ubiquitin-activating E1 family enzymes [1].	Domain
A, B	PF16191	Ubiquitin-activating enzyme E1 four-helix bundle (E1_4HB)	Ubiquitin-activating enzyme E1 four-helix bundle	This domain is found in the ubiquitin-activating E1 family enzymes [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Ubiquitin-like modifier-activating enzyme 1	RNA binding binding organic cyclic compound binding nucleic acid binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding RNA binding binding organic cyclic compound binding nucleic acid binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding ubiquitin-like modifier activating enzyme activity ligase activity, forming carbon-sulfur bonds catalytic activity, acting on a protein ubiquitin activating enzyme activity catalytic activity ligase activity ATP-dependent activity	cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process organonitrogen compound metabolic process primary metabolic process organic substance metabolic process protein ubiquitination macromolecule modification metabolic process protein metabolic process macromolecule metabolic process cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process organonitrogen compound metabolic process primary metabolic process organic substance metabolic process protein ubiquitination macromolecule modification metabolic process protein metabolic process macromolecule metabolic process post-translational protein modification protein modification process protein modification by small protein conjugation protein modification by small protein conjugation or removal organonitrogen compound catabolic process catabolic process proteolysis involved in protein catabolic process protein catabolic process macromolecule catabolic process modification-dependent macromolecule catabolic process modification-dependent protein catabolic process proteolysis ubiquitin-dependent protein catabolic process organic substance catabolic process	membrane-bounded organelle intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle extracellular exosome extracellular vesicle extracellular organelle extracellular region extracellular space vesicle membrane-bounded organelle intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle extracellular exosome extracellular vesicle extracellular organelle extracellular region extracellular space vesicle extracellular membrane-bounded organelle cytosol nucleus membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR042302	Ubiquitin-activating enzyme E1, FCCH domain superfamily	Homologous Superfamily
A, B	IPR045886	ThiF/MoeB/HesA family	Family
A, B	IPR042449	Ubiquitin-activating enzyme E1, inactive adenylation domain, subdomain 1	Homologous Superfamily
A, B	IPR019572	Ubiquitin-activating enzyme, SCCH domain	Domain
A, B	IPR018075	Ubiquitin-activating enzyme E1	Family
A, B	IPR032418	Ubiquitin-activating enzyme E1, FCCH domain	Domain
A, B	IPR000011	Ubiquitin/SUMO-activating enzyme E1-like	Family
A, B	IPR042063	Ubiquitin-activating enzyme E1, SCCH domain	Homologous Superfamily
A, B	IPR000594	THIF-type NAD/FAD binding fold	Domain
A, B	IPR032420	Ubiquitin-activating enzyme E1, four-helix bundle	Domain
A, B	IPR018965	Ubiquitin-activating enzyme E1, C-terminal	Domain
A, B	IPR035985	Ubiquitin-activating enzyme	Homologous Superfamily
A, B	IPR033127	Ubiquitin-activating enzyme E1, Cys active site	Active Site
A, B	IPR038252	Ubiquitin-activating enzyme E1, C-terminal domain superfamily	Homologous Superfamily
A, B	IPR018074	Ubiquitin-activating enzyme E1, conserved site	Conserved Site

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: P22314	infantile-onset X-linked spinal muscular atrophy squamous cell carcinoma arthrogryposis breast carcinoma large cell medulloblastoma ovarian cancer pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia spinal muscular atrophy X-linked spinal muscular atrophy 2 astrocytic tumor glioblastoma neurodegenerative disease pancreatic intraductal papillary-mucinous carcinoma psoriasis atypical teratoid rhabdoid tumor infantile-onset X-linked spinal muscular atrophy squamous cell carcinoma arthrogryposis breast carcinoma large cell medulloblastoma ovarian cancer pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia spinal muscular atrophy X-linked spinal muscular atrophy 2 astrocytic tumor glioblastoma neurodegenerative disease pancreatic intraductal papillary-mucinous carcinoma psoriasis atypical teratoid rhabdoid tumor osteosarcoma pancreatic intraductal papillary-mucinous neoplasm rheumatoid arthritis

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.